Chalk line anchor



FIG. 1 is a perspective view of a chalk line anchor embodying my newdesign;

FIG. 2 is a side elevational view, the opposite side being a mirrorimage thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The ornamental design for a chalk line anchor, as shown and described.